/// <license>
/// Copyright (c) 2002-2008, DotNetNuke Corporation
/// All rights reserved
///
/// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
/// documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
/// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and 
/// to permit persons to whom the Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in all copies or substantial portions 
/// of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED 
/// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
/// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
/// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
/// DEALINGS IN THE SOFTWARE.
/// </license>

#region Using Statements

using System;
using System.ComponentModel;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using DotNetNuke.Common;
using DotNetNuke.Common.Utilities;

using DotNetNuke.Modules.Articles.Common;
using Constants = DotNetNuke.Modules.Articles.Common.Constants;
using DotNetNuke.Modules.Articles.Framework;

#endregion

namespace DotNetNuke.Modules.Articles.UI.Controls
{
    /// -----------------------------------------------------------------------------
    /// <summary>
    /// The Abstract skin object displays an article's abstract.
    /// </summary>
    /// <history>
    /// 	[cnurse]	02/11/2006	created
    /// </history>
    /// -----------------------------------------------------------------------------
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal),
    AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal),
    ToolboxData("<{0}:Abstract runat=\"server\"> </{0}:Abstract>")]
    public class Abstract : ArticleSkinObjectBase
    {

        #region Protected Properties

        /// -----------------------------------------------------------------------------
        /// <summary>
        /// Gets the design time text to display
        /// </summary>
        /// <history>
        ///     [cnurse]  04/07/2006  Created
        /// </history>
        /// -----------------------------------------------------------------------------
        [Browsable(false)]
        protected override string DesignTimeText
        {
            get { return Constants.TEXT_LoremIpsumShort; }
        }

        /// -----------------------------------------------------------------------------
        /// <summary>
        /// Gets the text to display
        /// </summary>
        /// <history>
        ///     [cnurse]  04/07/2006  Created
        /// </history>
        /// -----------------------------------------------------------------------------
        [Browsable(false)]
        protected override string DisplayText
        {
            get 
            {
                //Get the Abstract Text
                string abstractText = Null.NullString;
                if ((this.ParentModule != null))
                {
                    if ((Article != null) && (Article.Abstract != Null.NullString))
                    {
                        abstractText = Page.Server.HtmlDecode(Article.Abstract);
                    }
                }
                return abstractText; 
            }
        }

        #endregion

        #region Public Properties

        /// -----------------------------------------------------------------------------
        /// <summary>
        /// Gets and sets a flag that indicates whether to chow a "more" link
        /// </summary>
        /// <history>
        /// 	[cnurse]	02/13/2006	created
        /// </history>
        /// -----------------------------------------------------------------------------
        [Bindable(true), 
        Category("Behavior"), 
        DefaultValue(true), 
        Description("Optionally display a 'read more' link.")]
        public bool ShowMoreLink
        {
            get
            {
                bool? display = (bool?)ViewState["ShowMoreLink"];
                return (display == null) ? true : display.Value;
            }
            set { ViewState["ShowMoreLink"] = value; }
        }

        #endregion

        #region Protected Methods

        /// -----------------------------------------------------------------------------
        /// <summary>
        /// RenderContents renders the contents of the control
        /// </summary>
        /// <remarks>
        /// </remarks>
        /// <param name="writer">An HtmlTextWriter</param>
        /// <history>
        /// 	[cnurse]	03/18/2006	created
        /// </history>
        /// -----------------------------------------------------------------------------
        protected override void RenderContents(HtmlTextWriter writer)
        {
            if (DesignMode)
            {
                writer.Write("Abstract");
            }
            else
            {
                //Render the base Text
                base.RenderContents(writer);

                //Render Show More Hyperlink
                RenderShowMore(writer);
            }
        }

        /// -----------------------------------------------------------------------------
        /// <summary>
        /// RenderShowMore renders the control's Show More Link
        /// </summary>
        /// <remarks>
        /// </remarks>
        /// <param name="writer">An HtmlTextWriter</param>
        /// <param name="includeBreak">A flag that determines whether a break tag is rendered
        /// before the button is rendered.</param>
        /// <history>
        /// 	[cnurse]	03/31/2006	created
        /// </history>
        /// -----------------------------------------------------------------------------
        protected virtual void RenderShowMore(HtmlTextWriter writer)
        {
            string showMoreText = Null.NullString;
            if ((this.ParentModule != null))
            {
                if (ShowMoreLink && (Article != null) && (Article.Abstract != Null.NullString))
                {
                    showMoreText = LocalizeString(Constants.KEY_ReadMore);

                }
            }
            else if (DesignMode)
            {
                //Add Design Time display code
                showMoreText = Constants.TEXT_ReadMore;
            }

            //Render Hyperlink
            if (showMoreText.Length > 0)
            {
                writer.AddAttribute(HtmlTextWriterAttribute.Href, Globals.NavigateURL(this.TabId, "", Constants.PARAM_ArticleId + "=" + Article.ArticleId.ToString()));
                writer.AddAttribute(HtmlTextWriterAttribute.Title, showMoreText);
                writer.RenderBeginTag(HtmlTextWriterTag.A);

                //Render Hyperlink Text
                writer.Write("&nbsp;" + showMoreText);

                //Render end of Hyperlink
                writer.RenderEndTag();
            }
        }

        #endregion

    }
}
